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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.messaging.ui;
import android.os.Parcelable;
/**
* Wraps around functionality to save, restore and reset a particular UI component's state.
*/
public interface PersistentInstanceState {
/**
* Saves necessary information about the current state of the instance to later restore
* the instance to its original state.
*/
Parcelable saveState();
/**
* Given a previously saved instance state, attempt to restore to its original view state.
*/
void restoreState(Parcelable restoredState);
/**
* Called when any current/preserved state should be reset to zero state.
*/
void resetState();
}
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